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Codex connects to the Sevalla MCP server at https://mcp.sevalla.com/mcp as a streamable HTTP server. The Codex CLI, IDE extension and desktop app share one configuration, so adding Sevalla once makes it available in all three.

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Before you begin

  • A Sevalla account and a company to work in.
  • Codex installed. See the Codex MCP docs for its own options.

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Add the server

1

Add Sevalla

In a terminal, run:
Codex writes the server to ~/.codex/config.toml.Or add the server by hand to ~/.codex/config.toml, or to .codex/config.toml in a project (Codex reads project files only in trusted projects):
~/.codex/config.toml
2

Sign in

Run:
Your browser opens the Sevalla dashboard: pick the company and the permissions, then click Authorize (what each choice means).

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Check the connection

Run codex mcp list: the list includes sevalla. In the Codex TUI or the desktop app, type /mcp to see the active servers, then ask “List my Sevalla services”.

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Use an API key instead

To skip OAuth, send an API key as a bearer token. bearer_token_env_var names the environment variable that holds the key, so config.toml holds no secret:
~/.codex/config.toml

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Remove the server

Sign out, then remove the server:
Removing the server doesn’t delete the API key that sign-in created. To revoke it, delete the key under Tools > API keys.